Jagged Edges in Eevee
This appears to be an issue with the resolution of your render. Try going to the Output Properties tab under the &quot;Dimensions&quot; section and increase the resolution of your render. Also ensure that the resolution % is set to 100 to achieve the maximum quality.
When moving around in the viewport, resolution is mainly limited by your monitor or computer screen, but when you render a scene, the resolution of the camera is now the limiting factor to how sharp your rendered image will appear. Increasing it should help produce a higher quality image and reduce how much you are able to see the jagged edges.